<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>锚点</title>
</head>
<body>
    <h1 id="catalogue">目录</h1>
    <h2>
        <a href="book.html#first" name="catalogue_1">第一章</a>
    </h2>
    <h2>
        <a href="book.html#second" name="catalogue_2">第二章</a>
    </h2>
    <h2>第三章</h2>
    <h2>第四章</h2>
</body>
</html>